Composition bowling-ball.



AP. I. KLOPSCH. COMPOSITION BOWLING BALL.

' APPLICATION FILED NOV. 26, 1915. v

1,203,747. Patented Nov. 7,1916,

wl TVESSES without leaving any joint Whatever and the exterior surface of the shell 1l appears polshells 15 and 16 can be manufactured 'in the' half mold 12 with the aid of the plunger 14, and a pair of such half shells l5 and 1(3can be united around a core in a separatdset of molds 12 and 13. 'f

In manufacturing a standard ball of 27 inches in circumference and 16 lbs. in Weight, the core 10 is approximately 11 lbs. in weight while the remaining 5 lbs. are supplied by the shell 11, and the latter is about a half inch thick'and the core about 7% of an inch in diameter. The proportion in weight and size of the core 10 and the shell'll may, how ever, be varied especially: when forming howling balls of. smaller size. 1

A bowling ball constructed in the manner described hasthe requisite properties of a rubber or a boXwood ball, namely, the desired hardness, resiliency, durability and wearing quality.

The bowling ball produced is not liable to chip around the finger holes and is properly balanced and not liable to appreciably shrink or expand under different weather conditions. A

A lcomposition bowling ball constructed as set forth can be cheaply manufactured and sold at about one-half the price of an .ordinary composition ball as now sold in the market.

Having thus described my invention, l

claim as new and desire to secure by Letters Patent:

1. A composition bowling ball, comprising a core and a shell tightly inclosing the said ti() core, the latter consisting ofl a cementitious mass and a filler and the shell consisting of a condensation product of carbolic acid and formaldehyde.

2. A composition bowling ball, comprising a core and a shell tightly inclosing` the said core, the core consisting of la mixture of a solution of ,chlorid of magnesia, oxid of magnesia and a iillcr, and the shell consisting of a condensation product of carbolic acid and formaldehyde. i

A composition bowling ball, comprising a core and a ishell tightly inclosing the said core, the latter consisting` of equal parts of chlorid of magnesia and oxid of magnesia, and a light filling material, and the said shell consisting of a condensation product of carbolic acid and formaldehyde.

4. A composition bowling ball, comprising a core and a hard baked shell tightly inclosing the said core, said core consisting of equal parts of chlorid of magnesia and oxid of magnesia and approximately twenty per c'ent. of a comminuted fibrous filling material. y

In testimony whereof I have signed my name to this specification in the presence of two subscribing' witnesses.

PAUL J. KLOPSCH.

Witnesses:

THEO. G. Hos'inn, PHILIP D. RoLLHAUs. 

